Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×

Comment Re:Not the Big Bang (Score 1) 127

It's not the simple fact that space is expanding that might cause a big rip, but the fact that the expansion is accelerating, and will - one day - be so fast that it will outpace light, at which point no forces will be able to act over even a Planck distance (because by the time they've propogated, that Planck distance will have expanded too much).

And what happens when that happens? I'm going to guess the result is universal and cataclysmic. We could even give it a name. Let's call it The Big Bang.

Comment Re:No profit in going to Mars. (Score 1) 275

I think we're better off building a lunar colony first, since it can be saved from disaster more easily, and can serve as a launchpad for low-gravity spaceship engineering/refueling.

I agree. The gravity is even lower, but otherwise conditions are effectively similar, since the Mars atmosphere is so thin. Ping times are a helluva lot lower too.

But we don't have as much money as Elon Musk, so no one listens to us.

Comment Re:Ok, next question. (Score 1) 275

Solar cells? Forget it. This is Mars, sunlight is much fainter and the atmosphere is very dusty. The only possible source of energy is a nuclear power plant, and Musk isn't going to launch one of those

I wouldn't bet money on that.

Especially considering there is already a nuclear power plant tooling around on Mars right now. It's not a reactor, but it's most definitely a power plant. Of course he would prefer to have a reactor. He might not even have to found yet another company to get it going. He might be able to buy a LFTR from China before his quoted timeframe runs out.

Comment Re:multiple inputs for 4k? (Score 1) 186

I was thinking more of a half of the screen from one cable, half of the screen from the other to effectively use the whole screen from one machine.

That's effectively how some versions of UltraHD monitors have worked. It's called tiling, though it generally uses only one cable. Your proposed method with two cables has been done, but it's pretty rare. Timing becomes an issue.

Comment Re:4K is nice but... (Score 1) 186

Having a full color gamut is important too. And a really good contrast ratio.

Check out the reviews of the Asus PB287Q. Very nearly full color gamut. These ain't your daddy's TN panels.

Yeah OLED would be nice, but I'd be surprised if an UltraHD or 4K OLED display is affordable this decade.

Comment Re:My computer can but no interest right now (Score 1) 186

A 4K TV on the other hand would be pretty cool and I think that Netflix has some programming 4K ready so I would probably make that leap long before a monitor.

You have that pretty backwards. UltraHD is immediately useful for a monitor, if you actually do work with a computer and aren't one of these people who think work can only be done in a maximized window. There's not much video in that resolution yet and at any distance it's not immediately obvious what resolution a TV is, but you can put all the text you want on screen at that resolution and you sit within arm's length of your monitor.

Comment Re:multiple inputs for 4k? (Score 1) 186

Computers can handle multiple monitors at 60Hz, so why not 4K with duel inputs? Is that feasible, and are there some models on the horizon that have multiple HDMI, dual-dvi, or dual-display port (pre-thunderbolt-2 display port - I don't know the version numbers)?

The Asus PB287Q has two HDMI and one DisplayPort and supports dual simultaneous input from any two of them. They call it Picture-by-Picture mode. They put two HD displays side by side, with black bars above and below, from two different machines. It's slightly silly, since it's not exactly convenient to switch to that mode, but it's available. It will also do Picture-In-Picture mode, displaying one input across the full screen and the other in a window up in the corner, all rescaled in software transparently to the machines outputting the signals.

Comment Re:It's Nissan (Score 1) 137

Also, there's the issue of economics. A high power fast charger, say, 400kW, costs on the order of $100k and is the size of 1-2 soda machines. If you're only servicing 1-2 EVs a month, you're never going to pay for it. If we assume a 25 year lifetime and, after factoring in the time value to money assume that it needs to pay for itself plus, oh, let's say $50k of maintenance, during 15 years, then it needs to average $10k a year, or $28 per day, or $1.14 per hour.

Such an exhaustive analysis of a topic Elon Musk doesn't particularly care about. The high power fast chargers aren't there to be economical. They're there to combat range anxiety. That's all. Even though literally 99% of all trips are under 70 miles. 98% are under 50 miles. Average trip length is 5.95 miles. Average daily mileage is less than 100 miles for 93% of vehicles in the US. High power fast chargers are unnecessary for 99% of the 4.2 trillion passenger miles Americans travel every year. They're only useful for the road trip edge case.

Given the massive disparity in long vs short distance road travel, it's very likely superchargers will never be economical, ever. It's more likely that battery technology will advance faster than the BEV adoption rate, despite all of Mr. Musk's efforts to address range anxiety. In the end, a BEV will be capable of making a 16 hour trip on a single charge, and recharge overnight, no supercharger required.

Comment Re:Time for an upgrade (Score 1) 176

Behold, the latest wonder from Asus. UltraHD in a 28" screen for $650 at NewEgg. Limit 2 per customer. (No, they're not paying me to post this. I wish they were.)

Yeah it's a TN panel, but the reviews show it can manage a standard color gamut better than pretty much any TN panel before it, while still benefiting from the TN design in its response time. It claims 1 ms grey to grey transition. Off angle viewing is better than many TN panels as well. And with the DisplayPort connection, it's capable of 60Hz vertical refresh at full resolution, something HDMI can't do until the new HDMI spec is finalized. It has one DisplayPort connector and two HDMI connectors (including one MDL-capable). Full range of display stand flexibility, including height, tilt, swivel and 90 degree rotation. Built-in picture-in-picture using multiple inputs simultaneously, or side-by-side mode from multiple inputs. Those last two being funky features I never even considered, but I'm not complaining.

It's undoubtedly not the last word in UltraHD, but it's a FINE entrant in the race.

Comment Re:The Question To Ask... (Score 4, Informative) 253

Are the Stingrays (which are useful as a law enforcement tool -- assuming proper warrants are obtained and appropriate restrictions adhered to) ...

There are no proper warrants that can be acquired that can authorize the Constitutional use of a Stingray device, nor are there appropriate restrictions other than a total ban on their use. They are the very definition of blanket surveillance and can not be used in any other way. There is no way to utilize them in a warranty-compliant manner because they will always sweep up the details of everyone in the vicinity, and there is no warrant for that. They are impossible to target, therefore their use by law enforcement (or any private organization being using to whitewash their use by law enforcement) is unconstitutional and therefore illegal.

That's black letter law, too, which is why it's being hidden. There is no sell-us-down-the-river Supreme Court decision that has ruled blanket surveillance legal, unlike, say, the assinine decision that is going to get the 11th Circuit overturned for claiming we have an expectation of privacy for our cell phone records (we do, but the Supreme Court has already ruled, in a massive fit of stupidity, that we don't because the phone company is some sort of magical "third party"). That hasn't happened (yet) with blanket surveillance, and it's hard to imagine even the Roberts court going that far around the bend.

That said, I echo the question you and others posted. How could these devices possibly be so valuable that federal agents are conspiring with local law enforcement to hide their illegal use? I'm assuming they're just unwilling to give up their toys, any toy at all, like the petulant children they are.

Slashdot Top Deals

"What if" is a trademark of Hewlett Packard, so stop using it in your sentences without permission, or risk being sued.

Working...